Method of handling clamshell containers containing a particulate aliquot

ABSTRACT

A method for handling package assemblies in an automated aliquot and/or dispersal processes is provided. Embodiments of the present invention include, but are not limited to, a method of handling a package assembly containing a particulate aliquot (such as a selected type of agricultural seed) that includes first and second portions which cooperate to contain the aliquot, the method including receiving the package assembly in a package assembly handling device, and applying a force to the package assembly using the package assembly handling device so that the first and second portions at least partially separate in response to the force.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. application Ser. No.12/769,426, filed Apr. 28, 2010, which claims priority from U.S. Pat.No. 8,702,371, filed Jul. 6, 2007, both of which are hereby incorporatedby reference in their entirety.

FIELD OF THE INVENTION

The present invention relates generally to methods of handlingcontainers for selectively dispensing one or more objects via automatedprocesses. More specifically, the present invention provides a methodfor selectively opening a container that contains metered seed samplealiquots. The method applies one or more forces to the container torelease one or more objects contained therein.

BACKGROUND OF THE INVENTION

Plant breeding, plant product development, plant productcharacterization, and plant product commercialization processes oftenrequire a large number of particles or components comprising aliquotsfrom a bulk or composite particulate sample, such as a seed sample. Forexample, in agricultural research, it is often necessary to segregate analiquot from a bulk sample such that the aliquot includes one or moreselected seeds (representing a statistically-significant population, forexample). Such aliquots must also sometimes be treated with a selectedtreatment compound (such as a particular fungicide or insecticide, forexample) and packaged with indicia that allows a researcher or fieldtechnician to easily identify the aliquot, as well as the handlinghistory and treatment history of the aliquot. An example is disclosed inWIPO Publication No. 2008/006063, entitled “System, Method, and ComputerProgram Product for Automated High-Throughput Seed Sample AliquotPreparation, Treatment, and Dispersal,” which claims priority from U.S.Provisional Application No. 60/806,684, also entitled “System, Method,and Computer Program Product for Automated High-Throughput Seed SampleAliquot Preparation, Treatment, and Dispersal,” both of which are herebyincorporated by reference herein in their entirety.

Current processes for dispensing packages containing one or moreparticles or components comprising an aliquot as part of an intermediateresearch and/or manufacturing step, is a complex and labor-intensiveone. Conventional techniques require aliquots to be packaged in smallpaper coin envelopes. In order to deposit the aliquots for plantingresearch plots, the paper coin envelopes are manually opened at thedesired planting locations. Not only is this process very timeconsuming, requiring a great deal of manual labor, but the paper coinenvelopes are not well suited for closing and re-opening, much lessre-opening by automated processes.

Some improved containers for use in receiving, containing, anddispensing aliquots have been disclosed, for example in U.S. Pat. No.7,938,284, entitled “Buckling Clamshell Container for Automated Aliquotand Dispersal Processes,” the disclosures of which are herebyincorporated by reference in their entirety. These documents generallydescribe an improved package assembly comprising first and secondportions configured to cooperate to contain the particular aliquot. Thepackage assemblies described in these documents are easily closed andre-opened, easily and economically manufactured, and may be provided ina one-piece assembly. Moreover, the package assemblies may be re-used.

However, there is a further need in the art for a method of handlingsuch package assemblies. The method should provide for automatedhandling of one or more package assemblies and should facilitateseparating first and second portions to release at least a portion ofthe particulate aliquot. Furthermore, there is a need for a method ofhandling package assemblies that identifies a package assembly labelcomprising a indicia of the aliquot.

SUMMARY OF THE INVENTION

The embodiments of the present invention satisfy the needs listed aboveand provide other advantages as described below. Embodiments of thepresent invention may include a method of handling a package assemblycontaining a particulate aliquot (such as one or more selected types ofagricultural seeds) and comprising first and second portions whichcooperate to contain the aliquot. According to some embodiments, themethod comprises receiving the package assembly in a package assemblyhandling device, and applying a force to the package assembly using thepackage assembly handling device so that the first and second portionsseparate in response to the force, thus releasing at least a portion ofthe particulate aliquot. In various embodiments, the step of applying aforce to the package assembly may comprise, but is not limited to,applying a compressive force to the package assembly; inserting anopening tool between the first and second portions of the packageassembly; or applying a force approximately normal to a plane defined bya flange portion of the package assembly; or combinations thereof. Insome embodiments, the step of receiving the package assembly maycomprise receiving a closed package assembly in an inverted orientationwherein the first portion comprises a container portion and the secondportion comprises a cover portion, the cover portion being disposedbelow the container portion and wherein when the cover portion separatesfrom the container portion, the particulate aliquot is released from thepackage assembly. The step of applying a compressive force in someembodiments may comprise moving the package assembly along a packageassembly handling path defined by a pair of opposing guide rails using apusher assembly, wherein the package assembly passes adjacent a pincharea defined in one of the guide rails, and wherein the pinch areadeflects one of opposing sides of the package assembly, thus compressingthe package assembly between the pinch area and the other of the guiderails. In other embodiments, the pinch area may comprise, but is notlimited to, a geometry of at least one of the guide rails configuredsuch that the guide rails converge as the package assembly moves alongthe package assembly handling path; one or more pinch rollers defined inat least one of the guide rails and configured to deflect at least oneof opposing sides of the package assembly as the package assembly movesalong the package assembly handling path; an actuated section of atleast one of the guide rails configured to move inward so as to deflectat least one of opposing sides of the package assembly; or at least oneadjustable insert or section located in one or both guide railsconfigured to deflect at least one of opposing sides of the packageassembly, the insert or section being configured to adjust the amount ofthe compression force applied to the package assembly; or combinationsthereof. Some embodiments may further comprise identifying a packageassembly label comprising a indicia of the aliquot using a machinereader device, which may include, but is not limited to, a bar codereader, or an RFID reader, or combinations of such devices.

Some embodiments may further comprise inserting an opening tool betweenportions of the package assembly. In various embodiments, inserting anopening tool between portions of the package assembly may comprisemoving the package assembly relative to a stationary opening tool,moving an opening tool relative to a stationary package assembly, or acombination of both. In some embodiments the opening tool may beinserted into an existing aperture defined by at least one of a pair ofopposing concave portions located on a flange portion of the packageassembly for encouraging at least one of the first and second portionsto flex outwardly from the other portion about the flexure axis so thatthe first and second portions separate. The step of inserting theopening tool into the aperture may also comprise inserting an openingtool into an aperture defined by at least one of a pair of opposingconcave portions located on a first flange portion of the packageassembly and at least one concave portion located on a second flangeportion of the package assembly and adapted to substantially align withat least one of the pair of opposing concave portions when the first andsecond portions are closed. The step of inserting the opening tool mayalso comprise moving the package assembly along a package assemblyhandling path defined by a pair of opposing guide rails using a pusherassembly so that the aperture of the package assembly contacts a leadingend of an opening tool. In addition, the method may further comprisedeflecting one of the first or second portions of the package assemblywhen the first and second portions separate so that the package assemblyat least temporarily remains in an open position. Furthermore, themethod may also include applying a force approximately normal to a planedefined by the flange portion using the package dispenser, forencouraging the first and second portions to separate. The force maycomprise actuating a disengaging tool through a notch portion defined inone of first and second flange portions of the package assembly to exerta force against the other of the first and second flange portions.

In addition to various embodiments describing a method of handlingpackage assemblies, the present invention also provides variousembodiments of a package handling system. Thus the various embodimentsof the present invention provide many advantages that may include, butare not limited to: providing automated handling of one or more packageassemblies; automatically facilitating separation of first and secondportions of the package assemblies in response to a compressive force;and identifying package assembly labels comprising indicia of thealiquots.

BRIEF DESCRIPTION OF THE DRAWINGS

Having thus described the invention in general terms, reference will nowbe made to the accompanying drawings, which are not necessarily drawn toscale, and wherein:

FIG. 1 shows a schematic diagram showing a package assembly handlingsystem configured to execute a method of handling package assemblies inaccordance with one exemplary embodiment of the present invention;

FIG. 2 is a perspective view of a package assembly handling device of apackage assembly handling system configured to execute a method ofhandling package assemblies in accordance with one exemplary embodimentof the present invention;

FIG. 3 shows a perspective view from a reverse angle of the packageassembly handling device of FIG. 2 in accordance with one exemplaryembodiment of the present invention;

FIG. 4 shows a package assembly, in an open position, for use with thepackage assembly handling device of FIG. 2 in accordance with oneexemplary embodiment of the present invention;

FIG. 4A shows a package assembly, in a closed position, for use with thepackage assembly handling device of FIG. 2 in accordance with oneexemplary embodiment of the present invention;

FIG. 5 shows a perspective view from a reverse angle of the packageassembly handling device of FIG. 2 wherein a package assembly is beinglowered by an elevator assembly into a package assembly handling path inaccordance with one exemplary embodiment of the present invention;

FIG. 6 shows a perspective view from a reverse angle of the packageassembly handling device of FIG. 2 wherein a package assembly is beingpushed by a pusher assembly along a package assembly handling path inaccordance with one exemplary embodiment of the present invention;

FIG. 7 shows a perspective view from a reverse angle of the packageassembly handling device of FIG. 2 wherein a package assembly is beingpushed by a pusher assembly along a package assembly handling path intoan opening tool and wherein a disengaging tool is being actuated, inaccordance with one exemplary embodiment of the present invention;

FIG. 8 shows a perspective view from a reverse angle of an opening toolof a package assembly handling device in accordance with one exemplaryembodiment of the present invention;

FIG. 9 shows a side view of a package assembly according to oneembodiment of the present invention including an exemplary flexingaction of a cover portion of the package assembly in response to anapplied compressive force; and

FIG. 10 shows a side view of a package assembly according to oneembodiment of the present invention including disengagement of a coverportion from a container portion after the application of a compressiveforce.

DETAILED DESCRIPTION OF THE INVENTION

The present invention now will be described more fully hereinafter withreference to the accompanying drawings, in which some, but not allembodiments of the invention are shown. Indeed, this invention may beembodied in many different forms and should not be construed as limitedto the embodiments set forth herein; rather, these embodiments areprovided so that this disclosure will satisfy applicable legalrequirements. Like numbers refer to like elements throughout.

While the embodiments of the present invention are described below inthe context of handling package assemblies in an agricultural researchenvironment wherein a package assembly handling device may be used tohandle a package assembly to dispense seed aliquots containing seeds ofa particular type (such as, for example, seeds corresponding to aselected corn plant hybrid or genetically modified organism (GMO)), itshould be understood that embodiments of the method of handling packageassemblies of the present invention may also serve as a method fordispensing a variety of particles, components, powders, fluids, foods,and/or other items that may require temporary containment and/orsegregation prior to being utilized for a downstream process.Embodiments of the present invention may thus be useful for selectivelydispensing such items when required.

As noted above, current processes known in the art for dispensingpackages containing one or more particles or components comprising analiquot as part of an intermediate research and/or manufacturing step,is a complex and labor-intensive one. These prior art techniques oftenrequire a great deal of manual labor and time to deposit the aliquotsfor planting research plots. In general terms, the present inventionprovides an automated method for handling one or more packageassemblies. The method facilitates at least partial separation of firstand second portions of a package assembly in response to a force appliedto the package assembly, thus releasing at least a portion of thealiquot. The following is a description of the components of a packagehandling system and a method of handling package assemblies, inaccordance with exemplary embodiments of the present invention, howeverit should be understood that many other embodiments not depicted arepossible within the scope of the present invention.

FIG. 1 is a schematic diagram showing a package assembly handling system10 configured to execute a method of handling package assembliescontaining a particulate aliquot in accordance with one exemplaryembodiment of the present invention. As shown in the figure, the packageassembly handling system 10 of the depicted embodiment comprises apneumatic supply 20, a controller 30, a scanner 40, and a packageassembly handling device 50. The controller 30 controls the pneumaticsupply 20, which operates one or more pneumatic components of thepackage assembly handling device 50. The controller 30 also controls thescanner 40, which, as will be discussed in more detail below, isconfigured to read information from the package assemblies. Thecontroller 30 may also directly control one or more components of thepackage assembly handling device 50.

FIG. 2 is a perspective view of the package assembly handling device 50of one embodiment showing its various components. Generally, the packageassembly handling device 50 of the depicted embodiment comprises a trayassembly 52, a base plate 54, first and second guide rails 56, 57, anelevator assembly 58, and a pusher assembly 60 (not visible in FIG. 2).The tray assembly 52 includes an array of bins 62 configured to hold aplurality of package assemblies 100. The base plate 56 is located belowthe tray assembly 52, with the guide rails 56, 57 mounted in a spacedparallel arrangement on top of the base plate 54, such that the guiderails 56, 57 are disposed directly below the bottom of the tray assembly52. In the depicted embodiment, the tray assembly 52, base plate 54,guide rails 56, elevator assembly 58, and pusher assembly 60 of thedepicted embodiment are constructed primarily of metal materials, suchas steel and/or aluminum, however in other embodiments these componentsmay be constructed of any other material(s) suitable for handlingpackage assemblies, as described below.

The tray assembly 52 is oriented with the guide rails 56, 57 such thatthe bottom of each of the bins 62 is substantially aligned between theguide rails 56, 57. Additionally, the tray assembly 52 is movable in adirection approximately aligned with arrow Al so that the bottom of eachbin 62 may be substantially aligned with a loading area 64 (betterviewed in FIG. 3) defined by opposing recesses 66 created in the firstand second guide rails 56, 57. The loading area 64 is configured toreceive a package assembly 100 for moving along a package assemblyhandling path defined by the guide rails 56, 57. The elevator assembly58 is located below the loading area 64 and includes an elevatingmechanism 67 which raises and lowers a pair of supports 68 in adirection approximately aligned with arrow A2. The supports 68 arelocated between the guide rails 56, 57 substantially aligned with theloading area 64. The elevator assembly 58 is configured to move thesupports 68 in a direction approximately aligned with arrow A2. In thedepicted embodiment, the tray assembly 52, the elevator assembly 58, andthe pusher assembly 60 are movable through pneumatic power by control ofthe controller 30, however in other embodiments any one or anycombination of the tray assembly 52, elevator assembly 58, or pusherassembly may be movable by other means, including, but not limited to,gear trains or screw drive systems driven by one or more electric motorscontrolled by the controller 30.

Although the tray assembly 52 of the depicted embodiment is shown empty,each bin 62 is configured to hold a plurality of package assemblies 100,which may be stacked one on top of another in a closed position. Soconfigured, the tray assembly 52 provides an array of closed packageassemblies 100. In the depicted embodiment, the tray assembly 52 createsan array that is 1 row by 8 bins (1×8). However, in other embodiments atray assembly may comprise a variety of configurations designed to suitdiffering storage, space, and/or performance constraints. In suchembodiments, the tray assembly may be movable in other directions so asto substantially align the bottoms of the bins with a loading area.Alternatively, multiple loading areas may be available to receivepackage assemblies from the tray assembly.

FIG. 3 is a perspective view from a reverse angle of the packageassembly handling device 50 in accordance with the exemplary embodimentof the invention depicted in FIG. 2. In this figure, the tray assembly52 and the first guide rail 56 have been removed to facilitatediscussion. Each of the first and second guide rails 56, 57 includes asupport surface 74 which defines the package assembly handling path andalong which a package assembly 100 travels after being loaded from thetray assembly 52 into the loading area 64. The pusher assembly 60includes a pushing mechanism 70 that is configured to move a pair ofpusher fingers 72 and a disengaging device 73 in a directionapproximately aligned with arrow A3. The pusher fingers 72 areconfigured to move the package assembly 100 along the package assemblyhandling path. As will discussed in more detail below, the disengagingdevice 73 is configured to aid in opening a package assembly 100. Thepusher fingers 72 are located between the supports 68 so that when thepair of pusher fingers 72 are moved by the pushing mechanism 70 and/orthe pair of supports 68 are moved by the elevating mechanism 67, thepusher fingers 72 and the supports 68 move independent of, and do notinterfere with, each other. A pinch area 75 is disposed in the secondguide rail 57 along the support surface 74, downstream from the loadingarea 64. The pinch area 75 is designed to apply a compressive force tothe package assembly 100 as the package assembly 100 moves along thepackage assembly handling path. The pinch area 75 of the depictedembodiment is formed by a geometry of the second guide rail 57, suchthat a portion of the second guide rail 57 extends out some distancefrom the second guide rail 57 toward the first guide rail 56 so that theguide rails 56, 57 converge and a compressive force is applied to thepackage assembly 100 as it moves along the package assembly handlingpath past the pinch area 75 by squeezing the package assembly 100between the first and second guide rails 56, 57. In various otherembodiments, the pinch area 75 may be formed in a variety of waysincluding, but not limited to, a geometric configuration of the firstand/or second guide rails that results in the first and second guiderails converging such that a compressive force is applied the packageassembly; one or more pinch rollers defined by the first and/or secondguide rails that extend inward so as to apply a compressive force to thepackage assembly; one or more actuated sections of the first and/orsecond guide rails wherein the one or more sections are configured toapply a compressive force to the package assembly when actuated inward;at least one adjustable insert or section located in one or both guiderails configured to deflect at least one of opposing sides of thepackage assembly, the insert or section being configured to adjust theamount of the compression force applied to the package assembly; andcombinations thereof.

An opening tool 76 that includes a spear 78 defining a spear end 80(shown in more detail in FIG. 8) is located between the guide rails 56,57 downstream from the loading area 64 and is configured such that apackage assembly 100 moving along the package assembly handling pathcontacts the spear end 80. In the depicted embodiment, the opening tool76 is constructed of a steel material, however in other embodiments itmay be constructed of any material structured to facilitate opening of apackage assembly 100. A scanner 40 is located proximate the packageassembly handling path and is configured to read a label 101 containingindicia associated with each package assembly 100 before the packageassembly 100 opens to release the aliquot. In the depicted embodiment,the label 101 includes barcode information relating to the aliquotcontained in the package assembly 100, however in other embodiments, thescanner 40 may be any other device capable of machine reading a label,including, but not limited to, a radio frequency identification (RFID)reader capable of identifying an RFID transponder associated with thepackage assembly 100, and/or a combination of a RFID reader and abarcode reader. Additionally, although the scanner 40 of the depictedembodiment of the present invention is located proximate the packageassembly handling path downstream from the loading area 64, in otherembodiments a scanner could be located in a variety of locations. Forexample, one or more scanners could be located proximate the trayassembly 52, the pusher assembly 60, the elevator assembly 58, and/orthe opening tool 76. In other embodiments, package assemblies could bescanned with an independent scanner prior to being loaded in the trayassembly 52. However, it should be noted that not all embodiments of thepresent invention include a scanner.

As noted above, improved package assemblies for use in receiving,containing, and dispensing aliquots have been disclosed, for example inU.S. Patent No. 7,938,284. FIGS. 4 and 4A show an exemplary packageassembly 100 of a type that may be used in conjunction with thedispenser 50 shown in FIGS. 1-3. Specifically, FIGS. 4 and 4A show aperspective view of a package assembly 100, in open and closedpositions, respectively, usable in conjunction with the method inaccordance with one embodiment of the present invention. As shown, thepackage assembly 100 may generally comprise a container portion 110defining an opening 120 and including at least two opposing sides 112,114. The package assembly 100 may further comprise a cover portion 130configured to cooperate with the container portion 110 to selectivelyclose the opening 120 defined by the container portion 110. It should benoted, however, that the method of handling package assemblies ofvarious embodiments of the present invention described herein mayoperate on a variety of package assembly designs and thus the presentinvention should not be limited to use with the particular packageassemblies those shown in the figures.

In order to effectively close the opening 120 defined by the containerportion 110 of the depicted embodiment, the cover portion 130 maycomprise a reinforcing ridge portion 140 operably engaged about aperimeter of the cover portion 130 and configured to be capable ofengaging an inner periphery of the opening 120, in an interference fit,so as to selectively close the opening 120, such that the cover portion130 is not easily disengaged from the container portion 110 without theapplication of a compressive force, as described herein. It should benoted that in various embodiments, only a portion of the cover portion130 and the container portion 110 may cooperate to hold the portions ina closed position. Moreover, an interference fit need not be required tohold the cover portion 130 in a closed position over the opening 120 ofthe container portion 110. The method of various embodiments of thepresent invention is operable in conjunction with package assemblies ofa variety of designs, which are configured so that first and secondportions at least partially separate in response to a force applied tothe package assembly. In such a manner, the first and second portionsmay separate, at least partially, in response to the force, thusreleasing at least a portion of a particulate aliquot contained withinthe package assembly. Thus, for example, package assemblies of otherembodiments may comprise independent first and second portions whereinwhen the portions separate, one of the portions falls away from theother. Additionally, an adhesive or heat sealing material may be used tohold the first and second portions (or a portion of the first and secondportions) in a closed position, wherein the adhesive or sealing materialis designed to fail when the package assembly is subjected to a force.

The reinforcing ridge portion 140 of the depicted embodiment may alsodefine a pair of flexure channels 145 on opposing sides 131, 133 of thecover portion 130. Furthermore, the flexure channels 145 may cooperateto define a flexure axis 142 extending substantially perpendicularly tothe opposing sides 131, 133 of the cover portion 130 defining theflexure channels 145 such that the flexure axis 142 is substantiallyparallel to the opposing sides 112, 114 of the container portion 110.

According to various embodiments of the present invention, the containerportion 110, the cover portion 130, and the opening 120 defined by thecontainer portion may be formed into a variety of different shapes. Forexample, in some embodiments, the various components of the packageassembly 100 may be formed in a substantially rectangular shape. Inother embodiments the various components (such as the container portion110, cover portion 130, and reinforcing ridge portion 140) may be formedto have a variety of other shapes, including but not limited to:polygonal shapes (including, but not limited to rectangles, triangles,hexagons); circular; oval; semi-circular; and combinations of suchshapes.

As shown in FIG. 4, the flexure channels 145 defined in the reinforcingridge portion 140 of the cover portion 130 may have a substantiallyhalf-circular cross section. According to other embodiments, the flexurechannels 145 may also define various other cross-sectional shapes thatmay be tailored to define a flexure axis 142 extending substantiallyperpendicularly to the opposing sides 131, 133 of the cover portion 130.For example, the flexure channels 145 may, in some alternativeembodiments, define cross-sectional shapes that may include, but are notlimited to: rectangular; oval; circular; triangular; and combinations ofsuch cross-sectional shapes. The shape of the cross-section of theflexure channel 145 may thus be tailored to suit the material used toform the cover portion 130 and/or the reinforcing ridge portion 140 soas to define a distinct flexure axis 142 across a width of the coverportion 130 such that the cover portion flexes outwardly from thecontainer portion 110 about the flexure axis 142 defined by the opposingflexure channels 145 (see, for example, FIG. 9, showing the flexingaction of the cover portion 130 about the flexure axis 142 in responseto a compressive force applied to the package assembly 100).

Thus, in the depicted embodiment the cover portion 130 may be configuredto flex outwardly from the container portion 110 about the flexure axis142, when a compressive force is applied to at least one of two opposingsides 112, 114 of the container portion 110. The compressive force maythus initiate the disengagement of the reinforcing ridge portion 140from the inner periphery of the opening 120 so that the cover portion130 disengages from the container portion 110. The package assembly 100of the depicted embodiment is inverted such that the cover portion 130may drop away (see FIG. 10) from the container portion 110 after thereinforcing ridge portion 140 has been disengaged from the innerperiphery of the opening 120 due to a compressive force applied to theopposing sides 112, 114 of the container portion 100.

The package assembly 100 may thus be used to disperse one or moreparticles 300 (such as a seed sample aliquot) that have been segregatedand contained within the container portion 110 of the package assembly100 of the present invention. As described generally above, the packageassembly 100 of various embodiments of the present invention may beadvantageously opened by the simple application of a compressive forceto at least one of the opposing sides 112, 114 of the container portion110 of the package assembly 100 while suspending the package assembly100 in an inverted position.

As shown generally in FIG. 4A, the package assembly 100 may furthercomprise a hinge portion 150 operably engaged between an edge of thecover portion 130 and one of the at least two opposing sides 112, 114 ofthe container portion 110 such that the cover portion 130 and thecontainer portion 110 may form a substantially unitary package assembly100 even when the cover portion 130 (and the reinforcing ridge portion140 extending therefrom) is disengaged from the inner periphery of theopening 120 defined in the container portion 110 (as shown generally inFIG. 9). In some embodiments of the present invention, the hinge portion150 may be integrally formed with one or both of the container portion110 and the cover portion 130 to form a unitary package assembly 100.According to some alternative embodiments, the hinge portion 150 mayalso be operably engaged with one or both of the container portion 110and the cover portion 130 using an adhesive material in order to formthe package assembly 100. As described generally above, the hingeportion 150 may be formed with a bias towards the “open” position (asshown generally in FIG. 9) such that the hinge portion 150 may urge thecover portion 130 generally away from the container portion 110 once thecompressive force has caused the initial disengagement of thereinforcing ridge portion 140 from an inner periphery of the opening 120defined in the container portion 110.

Furthermore, as shown generally in FIGS. 4 and 4A, the package assembly100 may also comprise a pair of complementary flange portions 119, 132extending outward from an outer periphery of the opening 120 and thereinforcing ridge portion 140 of the cover portion 130, respectively.For example, the package assembly 100 may further comprise a firstflange portion 119 extending substantially perpendicular from at outerperiphery of the opening 120, and a second flange portion 132 extendingsubstantially outward from the reinforcing ridge 140 such that when thecover portion 130 closes the opening 120 defined by the containerportion 110, the first flange portion 119 is substantially adjacent andparallel to the second flange portion 132. Furthermore, the secondflange portion 132 may define a pair of opposing concave portions 135substantially coaxial with the flexure axis 142. According to suchembodiments, the concave portions 135 may form a corresponding pair ofapertures between the first and second flange portions 119, 132 when thecover portion 130 closes the opening 120 defined by the containerportion 110. For example, in some of such embodiments, the pair ofapertures defined by the opposing concave portions 135 formed in thesecond flange portion 132 may be adapted to be capable of receiving anopening tool 76 (described in more detail with respect to FIGS. 5-8) forencouraging the cover portion 130 to flex outwardly from the containerportion 110 about the flexure axis 142 so that the cover portion 130disengages from the container portion 110. In various embodiments, anopening tool may any implement configured to aid in encouraging packageassembly portions to separate, such as a screwdriver, knife, or othernarrow-bladed implement, etc. Thus, such opposing concave portions 135defined in by the second flange portion 132 may serve to define acorresponding pair of apertures between the flange portions 119, 132 sothat the opening tool 76 may be inserted into the aperture located at ornear the flexure axis 142 so as to further urge the cover portion 130out of its interference fit with the container portion 110. The packageassembly 100 of the depicted embodiment also includes at least onecorresponding concave portion 151 defined by the first flange portion119. The corresponding concave portion 151 is configured such that whenthe cover portion 130 is engaged with the container portion 110, thecontainer ridge 151 substantially aligns with one of the opposingconcave portions 135 defined by the second flange portion 132. In such amanner, the aligned concave portion 135 and corresponding concaveportion 151 form a larger aperture between the first and second flangeportions 119, 132 when the cover portion 130 closes the opening 120defined by the container portion 110. As a result, the aperture formedby the concave portion 135 and the corresponding concave portion 135creates a larger target for receiving an opening tool for encouragingthe cover portion 130 to flex outwardly from the container portion 110about the flexure axis 142 so that the cover portion 130 disengages fromthe container portion 110. It should be noted that in other embodiments,concave portions need not be included on the package assembly. For suchembodiments, an opening tool may still be used to at least partiallyseparate portions of a package assembly by inserting the opening toolbetween the portions.

A notch portion 153 is defined by the first flange portion 119 of thedepicted embodiment. The notch portion 153 is configured to allow adisengaging device 73 (described in more detail with respect to FIGS.5-7) to exert a force approximately normal to the second flange 132through the notch portion 153. In such a manner, the disengaging device73 may further facilitate disengaging the cover portion 130 from thecontainer portion 110. In various embodiments, a disengaging device maybe any device, tool, and/or mechanism configured to exert a forcethrough the notch portion 153 against the second flange 132. As such, invarious embodiments a disengaging device may be used alone, or incombination with the opening tool 76 received in one or both of the pairof apertures defined by the opposing ridges 135. As a result, in variousembodiments, this may increase opening success for packaging assemblieswith dimensional variability. It should be noted that although the notchportion 153 shown in the depicted embodiment is generally rectangular inshape, one skilled in the art will recognize that a notch portion inaccordance with the present invention may take many other shapes,including, but not limited to, a half circular shape, a half oval shape,a triangular shape, a circular shape, an oval shape, and combinationsthereof.

FIGS. 5-7 depict a method of handling a package assembly 100 inaccordance with one embodiment of the present invention. In thesefigures, the tray assembly 52 and the first guide rail 56 have beenremoved to facilitate discussion. The method of handling packageassemblies of various embodiments of the present invention may handleone or a plurality of package assemblies. Referring to depictedembodiment of FIG. 5, although a single package assembly 100 is shown,the description assumes that a stack of package assemblies exists abovethe package assembly 100. The process begins with the tray assembly 52moving such that a bin 62 containing a stack of package assemblies isaligned with the loading area 64, which is defined by opposing recessedareas 66 located in the first and second guide rails 56, 57. Thedistance between the first and second guide rails 56, 57 in the loadingarea 64 is configured to be slightly greater than the length of thepackage assembly 100. In this manner, the supports 68 may move intocontact with the bottommost package assembly 100 and the stack ofpackage assemblies may be moved up and down by the elevating mechanism67 proximate the loading area 64. Once a stack of package assemblies hasbeen moved by the tray assembly 52 into a position approximately alignedwith the loading area 64, the elevating mechanism 67 moves the supports68 into contact with the bottommost package assembly 100. The entirestack of package assemblies is then moved downward so that the flanges119, 132 of the bottommost package assembly 100 approximately align withthe support surfaces 74 of the first and second guide rails 56, 57. Asthe elevating mechanism 67 lowers the stack of package assemblies, thelabel 101 of the bottommost package assembly 100 is scanned by thescanner 40 (not shown). In this manner, information relating to thebottommost package assembly 100, which is the package assembly enteringthe package assembly handling path, may be recorded. As the elevatingmechanism 67 continues to lower the stack of package assemblies, theflanges 119, 132 of the bottommost package assembly 100 contact thesupport surfaces 74 of the first and second guide rails 56, 57. As shownin FIG. 4A, in some embodiments the length of second flange portion 132may be shorter than the length of first flange portion 119 so that whenthe package assembly 100 is lowered onto the support surfaces 74, thefirst flange portion 119 contacts the support surface 74 of the secondguide rail 57 so that the cover portion 130 may be free to separate fromthe container portion 110 upon application of a compressive force.

In FIG. 6, the pushing mechanism 70 (not shown) moves the pusher fingers72 into contact with the bottommost package assembly 100 such that thepackage assembly 100 may be pushed out from the bottom of the stack ofpackage assemblies, along the package assembly handling path. The topsurfaces of the pusher fingers 72 are configured so that as the pusherfingers 72 move the bottommost package assembly 100 out from under thestack of package assemblies and along the package assembly handlingpath, the remaining stack of package assemblies rides on top of thepusher fingers 72. Once the pusher fingers 72 move past the stack ofpackage assemblies, the elevating mechanism 67 moves the supports 68upward, lifting the stack of package assemblies off of the pusherfingers 72. The pushing mechanism 70 then continues to drive the pusherfingers 72, thus moving the package assembly 100 along the packageassembly handling path defined by the support surfaces 74, past thepinch roller 75. As noted above, the pinch roller 75 extends out somedistance from the second guide rail 57 toward the first guide rail 56such that as the package assembly 100 passes the pinch roller 75, thepackage assembly 100 is forced against the first guide rail 56 and isthus subjected to a compressive force. In the depicted embodiment, thecompressive force is applied against the hinge portion 150 and anopposite end of at least one of the first and second flanges 119, 132.As such the compressive force is applied approximately perpendicular tothe flexure axis 142. The compressive force causes the cover portion 130of the package assembly 100 to flex outwardly from the container portion110 about the flexure axis 142, which causes the cover portion 130 ofthe package assembly 100 to bow downward (as shown, for example, in FIG.9). In some embodiments, this compressive force initiates thedisengagement of the reinforcing ridge portion 140 from the innerperiphery of the opening 120 so that the cover portion 130 disengagesfrom the container portion 110. As shown in FIG. 10, in such embodimentsthe cover portion 130 drops away from the container portion 110 afterthe reinforcing ridge portion 140 has been disengaged from the innerperiphery of the opening 120.

In other embodiments, such as the depicted embodiment, additionaldevices and/or mechanisms may be used to further encourage the coverportion 130 to disengage from the container portion 110. Referring toFIG. 7, once the cover portion 130 is bowed about the flexure axis 142,the pushing mechanism 70 drives the pusher fingers 72 to move thepackage assembly 100 such it engages an opening tool 76 (shown by itselfin FIG. 8). In particular, the package assembly 100 is moved along thepackage assembly handling path such that an existing aperture defined byone of the opposing concave portions 135 and corresponding concaveportion 151 of the package assembly 100 contacts the spear end 80 of theopening tool 76. The opening tool 76 is rigidly attached to the baseplate 54 such that as the package assembly 100 continues to move alongthe package assembly handling path, the spear 78 inserts between thecover portion 130 and the container portion 110 of the package assembly100.

Concurrently, a disengaging tool 73, which is attached between thepusher fingers 72, is actuated by the movement of the pusher fingers 72along the package assembly handling path. In the depicted embodiment,the disengaging tool 73 is mechanically actuated by the movement of thepusher fingers 72, however in other embodiments the disengaging tool 73may be actuated in various other ways. Once actuated, the disengagingtool 73 of the depicted embodiment is configured to push downwardthrough the notch portion 153 defined by the first flange portion 119 ofthe package assembly 100. In such a manner, the disengaging device 73exerts a force approximately normal to the second flange 132 through thenotch portion 153 further encouraging the cover portion 130 to disengagefrom the container portion 110. Thus, in the depicted embodiment, theopening tool 76 and the disengaging tool 73 ensure that the coverportion 130 completely disengages from the container portion 110.

If, as shown in the figures, the package assembly 100 is inverted, thecover portion 130 drops away from the container portion 110 after thereinforcing ridge portion 140 has been disengaged from the innerperiphery of the opening 120. Once the cover portion 130 has disengagedfrom the container portion 110, a deflecting arm 82 of the opening tool78 deflects the cover portion 130 such that it is held away from thecontainer portion. As shown generally in FIG. 10, the package assembly100 may thus be used to disperse a plurality of particles 300 (such as aseed sample aliquot) that have been segregated and contained within thecontainer portion 110 of the package assembly 100 of the presentinvention.

It should be noted that although the depicted embodiments show a methodin which portions of a package assembly are at least partially separatedby applying several forces to the package assembly (i.e., applying acompressive force to opposing sides of the package assembly, insertingan opening tool between portions of the package assembly, and applyingan approximately normal force to a flange defined in one portion of thepackage assembly), in other embodiments a package assembly may be atleast partially separated by applying any one force to the packageassembly or any combination of forces to the package assembly.Additionally, although the depicted embodiments show a method in whichportions of a package assembly are at least partially separated byapplying several forces to the package assembly as the package assemblymoves along a package assembly handling path, in other embodiments anyone force may be applied to the package assembly or any combination offorces may be applied to the package assembly without requiring thepackage assembly to move along a package assembly handling path. Thatis, in other embodiments any one force or any combination of forcesadapted to at least partially separate portions of a package assemblymay act on an unmoving package assembly.

Many modifications and other embodiments of the invention will come tomind to one skilled in the art to which this invention pertains havingthe benefit of the teachings presented in the foregoing descriptions andthe associated drawings. Therefore, it is to be understood that theinvention is not to be limited to the specific embodiments disclosed andthat modifications and other embodiments are intended to be includedwithin the scope of the appended claims. Although specific terms areemployed herein, they are used in a generic and descriptive sense onlyand not for purposes of limitation.

What is claimed is:
 1. A method of handling a package assemblycontaining a particulate aliquot and comprising first and secondportions which cooperate to contain the aliquot, said method comprising:receiving the package assembly in a package assembly handling device;and applying a force to the package assembly using the package assemblyhandling device so that the first and second portions at least partiallyseparate in response to the force, thus releasing at least a portion ofthe particulate aliquot, wherein applying a force to the packageassembly using the package assembly handling device comprises insertingan opening tool between the first and second portions of the packageassembly.
 2. The method of handling a package assembly of claim 1,wherein applying a force to the package assembly using the packageassembly handling device comprises applying a force approximately normalto a plane defined by a flange portion of the package assembly.
 3. Themethod of handling a package assembly of claim 1, wherein inserting anopening tool between the first and second portions of the packageassembly comprises inserting the opening tool into an aperture definedby at least one of a pair of opposing concave portions located on aflange portion of the package assembly for encouraging at least one ofthe first or second portions to flex outwardly from the other portionabout the flexure axis so that the first and second portions separate.4. The method of handling a package assembly of claim 3, whereininserting an opening tool into an aperture comprises inserting theopening tool into an aperture defined by at least one of a pair ofopposing concave portions located on a first flange portion of thepackage assembly and at least one corresponding concave portion locatedon a second flange portion of the package assembly and adapted tosubstantially align with at least one of the pair of opposing concaveportions when the first and second portions are closed.
 5. The method ofhandling a package assembly of claim 3 further comprising applyingsecond force to the package assembly, wherein the second force isapplied approximately normal to a plane defined by the flange portion,and wherein the second force encourages the first and second portions toseparate.
 6. The method of handling a package assembly of claim 5,wherein applying a second force comprises actuating a disengaging toolthrough a notch portion defined in one of first and second flangeportions of the package assembly to exert a force against the other ofthe first and second flange portions for encouraging the first andsecond portions of the package assembly to separate.
 7. The method ofhandling a package assembly of claim 4, wherein inserting an openingtool into an aperture defined by at least one of a pair of concaveportions located on a flange portion of the package assembly comprisesmoving the package assembly along a package assembly handling pathdefined by a pair of opposing guide rails using a pusher assembly sothat the aperture of the package assembly contacts an opening tool. 8.The method of handling a package assembly of claim 7, wherein the firstand second portions of the package assembly are joined at one end by ahinge, and wherein the method further comprises deflecting one of thefirst or second portions of the package assembly with the opening toolwhen the first and second portions separate so that the package assemblyat least temporarily remains in an open position.
 9. The method ofhandling a package assembly of claim 1, further comprising identifying apackage assembly label comprising a indicia of the aliquot using amachine reader device.
 10. The method of handling a package assembly ofclaim 9, wherein the machine reader device comprises a device selectedfrom the group consisting of: a bar code reader; an RFID reader; andcombinations thereof.
 11. The method of handling a package assembly ofclaim 1, wherein receiving the package assembly comprises receiving aclosed package assembly in an inverted orientation wherein the firstportion comprises a container portion and the second portion comprises acover portion, the cover portion being disposed below the containerportion, and wherein when the cover portion separates from the containerportion, at least a portion of the particulate aliquot is released fromthe package assembly.
 12. A package assembly handling system forhandling a package assembly comprising first and second portions thatcooperate to contain a particulate aliquot, the system comprising: apackage assembly handling device configured for applying a force to thepackage assembly so that the first and second portions at leastpartially separate, thus releasing at least a portion of the particulatealiquot, wherein the force comprises inserting a opening tool betweenthe first and second portions of the package assembly.
 13. The packageassembly handling system of claim 12, wherein the force comprises aforce approximately normal to a plane defined by a flange portion of thepackage assembly.
 14. The package assembly handling system of claim 12wherein the opening tool is configured for inserting into an aperturedefined by at least one of a pair of opposing concave portions locatedon a flange portion of the package assembly, for encouraging at leastone of the first or second portions to flex outwardly from the otherportion about the flexure axis so that the first and second portionsseparate.
 15. The package assembly handling system of claim 14, furthercomprising a disengaging tool configured for applying a second force tothe package assembly, approximately normal to a plane defined by theflange portion, for encouraging the first and second portions toseparate.
 16. The package assembly handling system of claim 12, furthercomprising a pusher assembly and a pair of guide rails defining apackage assembly handling path, and wherein the pusher assembly isconfigured for moving the package assembly along the package handlingpath so that the aperture of the package assembly contacts a leading enddefined by the opening tool.
 17. The package assembly handling system ofclaim 16, wherein the first and second portions of the package assemblyare joined at one end by a hinge, and wherein the opening tool furtherdefines a deflecting arm configured to deflect one of the first orsecond portions of the package assembly when the first and secondportions separate so that the package assembly at least temporarilyremains in an open position.
 18. The package assembly handling system ofclaim 12, further comprising a machine reader device configured foridentifying a package assembly label comprising indicia of the aliquot.19. The package assembly handing system of claim 18, wherein the machinereader device comprises a device selected from the group consisting of:a bar code reader; an RFID reader; and combinations thereof.